Genetic relatedness among <i>I. monticola</i> predefined populations, based on microsatellite multilocus genotypes.

<p><b>A)</b> Unrooted NJ tree, using chord distances. Numbers indicate bootstrap support (10,000 samples; only values ≥60% are reported) for the corresponding internal branches. <b>B)</b> Assignment of individuals from the predefined populations to <i>k</i> clusters, as inferred by STRUCTURE. Colors identify the different clusters inferred by the analysis. Log probabilities of data, <i>L(k)</i>, together with % of parallel runs supporting the displayed partition, are shown for each <i>k</i>. Abbreviations: CAMOR– Cantabrian Mountain Range; NWP– North Western Populations (<i>i.e.</i>, all those included in the occidental group, except Estrela).